Breathable And Light Weight Play Yards And Mattresses

ABSTRACT

Various configurations of play yards and play yard mattresses are presented herein. Each of the play yards and play yard mattresses is light weight and breathable, yet has sufficient structural integrity to support an enclosed child or infant. In some embodiments, the play yards and mattresses may be collapsible. In other embodiments, play yards feature a mattress placed above a base assembly, such that an interior space is formed between the mattress and base assembly, said interior space being substantially void of any articles or other materials. In another embodiment, play yards feature a base assembly having a centrally located hub assembly comprising a release button and sliding pins.

The present application claims priority to U.S. Provisional Patent Application Ser. No. 62/046,249 for “Breathable and Light Weight Play Yards and Mattresses”, filed Sep. 5, 2014, the disclosure of which is incorporated herein by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to play yards. In particular, the present disclosure relates to a play yard that is collapsible, light weight, and breathable.

BACKGROUND

Play yards are well known in the art. Play yards are structures designed to provide a safe environment for infants and children. Conventional play yards are designed to fold into a compact, generally rectangular structure. When erected, the play yard should be stable, and provide support to keep the structure standing upright. For maximum convenience, a foldable play yard should be readily collapsible to a storage position without the disassembly of any parts. When stored, the play yard should be easily transportable from one location to another.

Play yards typically include fabric coverings along the sides to enclose an infant or child contained therein. Further, at the base of a play yard is typically a mattress designed to safely support an infant or child. Some play yard mattresses may also be collapsible like the play yard itself. In this case, a collapsed mattress is deployed to form a rectangular mattress, which is then placed within an opened play yard to create a safe surface for play for an infant or child.

There are a number of issues associated with current play yards. Fabric coverings used in play yards are typically not breathable, and therefore may retain odors or become stained. Similarly, fabric used as a mattress bedding may also not be breathable and therefore suffer from similar problems. The design of a collapsible play yard may lack sufficient structural stability when deployed, or may alternately use heavy or cumbersome components that affect portability. Further, mattresses can include a hard structural layer that can potentially injure an infant or child.

Currently, some of these issues are addressed in a variety of ways, with varying degrees of success. In some cases, the solutions to these issues are expensive, thereby raising the price of the play yard. It would be beneficial if these issues could be addressed in a safe, convenient and cost effective manner.

SUMMARY

The problems of the prior art are addressed by novel designs for a play yard and a play yard mattress. In one embodiment, a play yard mattress is configured such that its structural components are separated from and not in contact with its bedding, such that the mattress results in a soft surface for safely placing an infant or child thereon. In certain embodiments, the play yard mattress can further comprise a tensioner positioned beneath the mattress and separated from the mattress such that it does not come into contact with the bedding. In another embodiment, a play yard can be configured to receive both the mattress and tensioner. In certain embodiments, the play yard can comprise a base assembly that is positioned beneath the mattress and separated from the mattress such that the base assembly does not come into contact with the bedding. In certain embodiments, the combination of these features can result in an interior space or cavity beneath the mattress that is substantially void of any structural components. Thus, an infant or child placed on the mattress will not come into contact with any structural components, potentially avoiding injury. In certain embodiments, the mattress may comprise mesh or other breathable fabrics that increase the breathability of the mattress.

In one embodiment, a play yard for holding an infant or child can comprise an upper rail assembly comprising a plurality of upper rails, a base assembly, and a side structure connecting the upper rail assembly and the base assembly. A mattress is positioned above the base assembly and comprises a substantially planar surface comprising a breathable material. An interior space is defined between the mattress and at least part of the base assembly, wherein the mattress comprises the top of the interior space. The interior space is configured to be substantially void of any objects. The upper rail assembly, side structure, mattress, and base assembly define a substantially rectangular enclosure. In one embodiment, the breathable material comprises mesh.

In certain embodiments, the base assembly further comprises at least one base arm connected to the side structure, the at least one base arm extending internally from the side structure and positioned below the mattress to form the interior space.

In certain embodiments, the base assembly further comprises a plurality of base arms and a hub assembly positioned within the play yard. The plurality of base arms are connected to the base arms and the hub assembly. Further, the plurality of base arms are positioned below and separated from the mattress to form the interior space. In a further embodiment, the hub assembly is configured to collapse the play yard to a collapsed state, wherein the play yard is substantially folded. In yet a further embodiment, the hub assembly can further comprise a release button, at least one sliding pin in communication with at least one of the plurality of base arms and the release button. Manipulating the release button creates a space within the hub assembly for the at least one sliding pin to enter, allowing the plurality of base arms to pivot with respect to the hub assembly and the side structure.

In certain embodiments, a play yard can further comprise a base fabric positioned above the base assembly and configured to receive the mattress. In certain embodiments, the base fabric can comprise a pocket sized to accommodate a structural component of a mattress placed within the play yard.

In another embodiment, a collapsible mattress for a play yard comprises a mattress frame. The mattress frame comprises a plurality of mattress arms pivotally connected to one another to form a rectangular shape. A fabric bedding is connected to the mattress frame to define a substantially planar surface for placing an infant or child. Further, a tensioner is in communication with the mattress frame and configured to provide outward force against the interior of the mattress frame to prevent the mattress frame from collapsing. In certain embodiments, the fabric bedding comprises a breathable mesh material.

In certain embodiments, a collapsible mattress can further comprise a first lateral connector linearly connecting at least two of the plurality of mattress arms. The tensioner can be in communication with the first lateral connector to provide outward force against the interior of the mattress frame. In a further embodiment, the tensioner can comprise a tube having an end connected to the first lateral connector.

In a further embodiment, the collapsible mattress can further comprise a second lateral connector spaced opposite from the first lateral connector. The second lateral connector linearly connects at least two of the plurality of mattress arms. An opposite end of the tube is connected to the second lateral connector. The tube is configured to extend between the first lateral connector and the second lateral connector to provide outward force against the interior of the mattress frame.

In another embodiment, a collapsible play yard for receiving an infant or child, comprises an upper rail assembly comprising a plurality of horizontal upper rails; a side structure connected to the upper rail assembly comprising a plurality of vertical posts; and a mattress positioned on the interior of the side structure. The mattress and the side structure are configured such that the mattress provides outward force against the interior of the side structure to prevent the play yard from collapsing.

In certain embodiments, the plurality of vertical posts are positioned at corners of the play yard. The mattress and the plurality of vertical posts are configured such that the corners of the mattress provide sufficient outward force against the plurality of vertical posts to prevent the play yard from collapsing. In a further embodiment, the play yard further comprises at least one mattress connector. The at least one mattress connector is connected to at least one post of the plurality of vertical posts and is configured to receive a corner of the mattress. In a further embodiment, the at least one mattress connector is configured to be removably attached to the at least one post of the plurality of vertical posts.

In certain embodiments, the upper rail assembly further comprises at least one lateral connector and at least two corner connectors. The plurality of horizontal upper rails further comprises a left upper rail and a right upper rail each pivotally coupled to the at least one lateral connector. The left upper rail and the right upper rail are each pivotally coupled to a corner connector of the at least two corner connectors. The upper rail assembly is configured such that as the at least one lateral connector is urged downwards, the at least one lateral connector and the at least two corner connectors remain substantially parallel to a plane, and the left upper rail and right upper rail move symmetrically. In a further embodiment, the left upper rail and the right upper rail communicate within the at least one lateral connector.

In certain embodiments, the side structure can comprise a relaxed position in which each of the plurality of vertical posts are angled inwards towards a center of the play yard. A mattress positioned on the interior of the side structure urges the plurality of vertical posts away from the relaxed position, causing the plurality of vertical posts to become substantially perpendicular to the upper rail assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the present disclosure, reference is made to the accompanying drawings, which are incorporated herein by reference and in which:

FIG. 1 is a perspective view of an embodiment of a play yard according to the disclosure;

FIG. 2 is a perspective view of a foldable frame of the play yard of FIG. 1;

FIGS. 3A-B are side views illustrating the operation of the foldable frame of FIG. 2 as it is transitioned from a deployed state (FIG. 3A) to a partially collapsed state (FIG. 3B);

FIGS. 4A-D are top, bottom, and side views of an embodiment of a mattress for a play yard according to the disclosure;

FIGS. 5A-B are perspective top and perspective bottom views of another embodiment of a mattress according to the disclosure, FIG. 5C is an exploded view of the mattress of FIGS. 5A-B, and FIG. 5D is a bottom view depicting the mattress of FIGS. 5A-B in a partially collapsed state;

FIG. 6A is a perspective view of another embodiment of a mattress according to the disclosure, FIG. 6B is a perspective view of the mattress of FIG. 6A partially collapsed and opened, and FIGS. 6C-I are bottom views of the mattress of FIG. 6A as it is transitioned from a collapsed state (FIG. 6C) to a deployed state (FIG. 6I);

FIGS. 7A-C are bottom views of a mattress using another embodiment of a tension tube assembly according to the disclosure;

FIG. 8A is a schematic diagram of a mattress according to the disclosure utilizing a spring to ensure proper tensioning of the mattress bedding, FIG. 8B is a cross-sectional view of a tension tube assembly according to the disclosure incorporating a tension gauge, and FIGS. 8C-D are side views of the tension tube assembly when the gauge indicates insufficient tension (FIG. 8C) and sufficient tension (FIG. 8D);

FIGS. 9A-B are perspective views of the mattress of FIG. 6A and further comprising modular legs;

FIGS. 10A-D are side, bottom, and perspective views of the foldable frame of FIG. 2 with the mattress of FIGS. 4A-D placed in the base;

FIG. 11 is a perspective view of the play yard of FIG. 1 and illustrating the use of a fabric covering near the base;

FIG. 12A is a perspective view the play yard of FIG. 1 and illustrating another embodiment of a fabric covering near the base, which further comprises a pocket for receiving a tension tube assembly of a mattress, and FIG. 12B is a perspective view of a mattress placed within the base of the play yard of FIG. 12A;

FIG. 13A is a perspective view of the play yard of FIG. 12A and further comprising a bassinet attachment, and FIG. 13B is a perspective view of the play yard of FIG. 13A with a mattress placed within the bassinet attachment;

FIGS. 14A-D are perspective cross-sectional views of a hub assembly according to the instant disclosure;

FIG. 15 is a perspective view of another embodiment of a play yard according to the disclosure;

FIG. 16 is a perspective view of a foldable frame of the play yard of FIG. 10;

FIGS. 17A-B are side views of an upper rail assembly of the foldable frame of FIG. 1 as it is transitioned from a deployed state (FIG. 17A) to a collapsed state (FIG. 17B);

FIGS. 18A-D are side views of an embodiment of an upper assembly according to the disclosure as it is transitioned from a deployed state (FIG. 18A) to a collapsed state (FIG. 18D), and FIG. 18E is a side view of the upper assembly of FIGS. 18A-D highlighting internal gears within a lateral connector;

FIGS. 19A-D are perspective views of the top of a mesh mattress showing the structure of the mattress as it is transitioned from a collapsed state (FIG. 19A) to a deployed state (FIG. 19D), and FIG. 19E is a perspective view of the mattress of FIGS. 15A-D placed in a play yard;

FIG. 20A is an exploded, cross-sectional, perspective view of a side post of the foldable frame of FIG. 16, and FIG. 20B is a cross-sectional, perspective view of the side post;

FIGS. 21A-F are perspective views of a play yard according to the disclosure as it is transitioned from a collapsed state (FIG. 21A) to a deployed state (FIG. 21F);

FIG. 22A is a perspective view of a mattress connector according to the disclosure, and FIG. 22B is a perspective view of the mattress connector of FIG. 22A incorporated into a play yard and holding the edge of a mattress frame;

FIG. 23 is a perspective view of a foldable frame of a play yard using the mattress connector of FIGS. 22A-B to secure a mattress at the base of the foldable frame;

FIG. 24 is a perspective view of a foldable frame of a play yard using the mattress connector of FIGS. 22A-B to secure a mattress in the bassinet position of the foldable frame;

FIG. 25 is a perspective view of a foldable frame of a play yard using the mattress connector of FIGS. 22A-B to secure a mattress in the bassinet position of the foldable frame, wherein the default position of the side posts is angled several degrees towards the interior of the frame;

FIG. 26A is a perspective view of a play yard containing a mattress in the bassinet position and utilizing a protection liner to cover a gap between the mattress and sides, and FIG. 26B is a cross-sectional view of a mattress, protection liner, and side of a foldable frame; and

FIGS. 27A-B are perspective views of a play yard according to the instant disclosure and incorporating an additional fabric covering near the bassinet position.

DETAILED DESCRIPTION

The present disclosure teaches various embodiments of play yards and play yard mattresses. The play yards and play yard mattresses may comprise a mesh fabric, thus creating a breathable and light-weight play yard. The use of mesh lowers the possibility of accidental suffocation. For example, an infant who places his or her mouth over the fabric mesh of a mattress according to the disclosure will still be able to breathe due to the mesh. If a fluid is spilled on the mattress, it will simply leak through the mesh and onto the floor, thus aiding in drying of the mattress. Further, the present disclosure describes various configurations of collapsible play yards that are designed to be light weight, yet provide sufficient tension along the structure to increase its structural stability. Additionally, the mattress is able to maintain tension and stability without any structural components substantially contacting the material comprising the bedding. Accordingly, a child placed on the mattress will not come into contact with any hard surfaces or structure, thus preventing accidental injury.

FIG. 1 illustrates a foldable child enclosure or play yard 100 according to one embodiment of the present invention. The play yard 100 is collapsible and thus portable, and can transition from a collapsed, folded, or closed state to a deployed, unfolded, or opened state, as shown. The play yard 100 comprises sides 102 which may be a soft, flexible mesh (or another material), thus allowing for a parent to view an infant or child placed safely within the enclosure. Fabric coverings 104 enclose a foldable frame 150 within (e.g., as shown in the embodiment of FIG. 2). The play yard 100 further comprises a base 106 which may contain a pad, soft surface, or a mattress 200. The play yard 100 can be supported by legs 108 at each corner. Though not shown in this embodiment, the play yard 100 may further feature additional padding within the interior, as well as additional child seats, bassinets, or storage devices for various articles.

Beneath the fabric coverings 104 of the play yard 100 is a foldable frame 150, as shown in the embodiment of FIG. 2. In this figure, the sides 102, fabric coverings 104, the mattress 200, and other covering elements have been omitted to better illustrate components of the foldable frame 150. The foldable frame 150 can comprise an upper rail assembly 152 that forms the upper part of the foldable frame 150, a side structure such as a plurality of substantially vertical side posts 160, and a base assembly 162 that forms the lower part of the foldable frame 150. The side structure connects the upper rail assembly 152 and base assembly 162 to define a substantially rectangular enclosure.

The upper rail assembly 152 can comprise a plurality of top rails 154, four upper corner assemblies 156, and four lateral connectors 180 connected to form a rectangular structure. As shown in this embodiment, the plurality of top rails 154 can comprise eight top rails 154. Further, the top rails 154 may vary in size and length. The upper corner assemblies 156 can connect two top rails 154 at a 90 degree angle and thus comprise the edges of the top of the foldable frame 150. The lateral connectors 180 linearly connect two top rails 154 (e.g., a left top rail and a right top rail at a 180 degree angle) in order to define a single horizontal rail when the play yard 100 is deployed. In this embodiment, each pivotal connection is a pivot rivet; however, other equivalent means of pivoting the top rail 154 in relation to the upper corner assembly 156 and lateral connector 180 may be substituted and will be evident to those having skill in the art.

The base assembly 162 comprises four base arms 164 each pivotally connected to lower corner assemblies 170 positioned on the side posts 160. Each base arm 164 extends internally away from the lower corner assemblies 170 and side posts 160 and are pivotally coupled to a hub assembly 450 centrally located at the base 106. As shown in this embodiment, the base arms 164 cross the interior of the play yard to connect to the hub assembly 450. The lower corner assembly 170 can comprise two opposing plates, such that an end of the base arms 164 is placed between the plates and secured via a pin, pivot rivet, or other pivotal connection. In this embodiment, the base arms 164 and hub assembly 450 form an “X”-shaped configuration; however, other shapes and configurations may be used.

The base arms 164 are formed such that a portion of each base arm is situated lower than the lower corner assemblies 170. Each of the base arms 164 comprises a lower portion 166 and an upper portion 168 that rises up to meet the lower corner assembly 170. In the deployed position, as shown, the lower portions 166 and hub assembly 450 are situated very close to the floor or other supporting surface. However, in some embodiments these components may be in contact with the supporting surface. As will be described in greater detail below, the lower portions 166 of the base assembly 162 help to define an interior space 190 or cavity below a mattress 200. This feature helps to prevent the mattress from contacting any structural components of the play yard 100, such as the base assembly 162. Accordingly, a child or infant placed on the mattress 200 will not come into contact with the base assembly 162.

The foldable frame 150 is designed to be collapsible, so that the play yard 100 may be easily packaged for transport. As shown in FIGS. 3A-B, in this embodiment, the foldable frame 150 is collapsed by urging the hub assembly 450 upwards and the lateral connectors 180 downwards. This motion causes the top rails 154 and base arms 164 to pivot about their respective pivot points, and brings the side posts 160 closer to one another. As will be described in further detail below, the pivotal connections between the lateral connectors 180 and top rails 154 may further comprise gears or other mechanisms that ensure that the top rails 154 on each side of the lateral connector 180 move symmetrically, keeping the lateral connectors 180 and upper corner assemblies 156 parallel to the same plane, and the side posts 160 substantially parallel to one another as the foldable frame 150 is collapsed or deployed. In this way, the foldable frame 150 and play yard 100 collapse or deploy in a symmetric fashion, ensuring that portions of the frame do not partially deploy or collapse before others. Once fully collapsed, the play yard 100 may be placed in a bag or other container and transported to a new destination. Similarly, the play yard 100 may be deployed by urging the hub assembly 450 downwards and lateral connectors 180 upwards.

Like the play yard 100, the mattress 200 may also be collapsible and foldable so as to facilitate portability. FIGS. 4A-D provide top, bottom, and side views, respectively, of the mattress 200, illustrating it in further detail. The mattress 200 comprises a bedding 202 attached to a plurality of mattress arms 204. As shown in this embodiment, the plurality of mattress arms 204 can comprise six arms interconnected to form a frame of the mattress 200. In this embodiment, the bedding 202 can comprise a mesh fabric which is breathable and ventilated. For example, the mesh fabric can comprise a nylon or polyester screen material or other similar materials. As shown in this embodiment, the six mattress arms 204 can be connected to one another through pivotal connections with four corner connectors 208 and two mattress lateral connectors 210. When the mattress is in a deployed state (as shown in the embodiment of FIGS. 4A-D), the corner connectors 208 can connect two mattress arms 204 at a 90 degree angle, whereas the lateral connectors 210 linearly connect two mattress arms 204, i.e., at a 180 degree angle, in a straight line. As shown in this embodiment, the mattress arms 204 may vary in size and length. Though this embodiment uses six mattress arms 204, other embodiments may use more or fewer. For example, in one embodiment, eight mattress arms 204 may be used with four mattress lateral connectors 210 on each edge of the mattress 200.

In this embodiment, the mattress 200 is configured to collapse inwardly along pivotal connections between the mattress arms 204 and the corner connectors 208 and lateral connectors 210. Accordingly, the mattress 200 may be collapsed by pivoting the mattress arms 204 inwardly towards the center of the mattress 200 along the connections at the corner connectors 208 and mattress lateral connectors 210. Similarly, the mattress 200 may be deployed by pivoting the mattress arms 204 outwardly with respect to the corner connectors 208 and mattress lateral connectors 210 such that the opposite mattress arms 204 are parallel to one another. While in this embodiment, the pivotal connections comprise pins, various forms of pivotal connections may be used, such as pivot rivets, bolts, and the like.

When placed in the play yard 100, the mattress is supported at each corner by the lower corner assemblies 170 of the foldable frame 150 (e.g., as shown in FIG. 2). This is accomplished by pins 212 positioned at each corner of the mattress. The pins 212 are attached to the bottom of each of the corner connectors 208. Each of the lower corner assemblies 170 has a notch configured to receive the corresponding pin 212. Further, in this embodiment, each mattress lateral connector 210 comprises a foot 214 which helps to support the edge of the mattress 200 when the mattress 200 is placed in the play yard 100. Thus, when the mattress 200 is placed within the play yard 100, the pins 212 enter the notches and the mattress 200 is secured, and the feet 214 contact the supporting surface or floor. Further, placement of the mattress 200 within the play yard 100 can provides additional tension against the side posts 160, thus preventing the play yard 100 from accidental or unintended folding or collapse. However, it should be noted that in certain embodiments, the mattress 200 may also be sufficiently supported by the play yard 100 and therefore may not require additional feet 214.

In certain embodiments, the pins 212 may be elongated and sufficient to support the mattress 200 on its own without the use of a play yard or other enclosure. For example, in these embodiments, the mattress 200 may be deployed, set onto a supporting surface, and used on its own as a cot.

To maintain structural integrity for the mattress 200 in the deployed state such that the mattress 200 does not unintentionally collapse, some outward force or tension may be provided to keep the mattress arms 204 parallel to one another at the mattress lateral connectors 210 and perpendicular to one another at the corner connectors 208 when the mattress 200 is deployed. Accordingly, the structure of the deployed mattress 200 may be supported by a tensioner configured to provide sufficient outward force against the interior of the mattress frame. Further, the tensioner can be configured to provide sufficient outward force to keep the mattress bedding 202 taut, and sufficient to support an infant or child placed thereon. In this embodiment, a tensioner can comprise a tension tube assembly 220 positioned beneath the mattress 200. As shown in this embodiment, the tension tube assembly 220 can be a rigid structural component that can be configured to interface with the mattress 200 such that the mattress 200 is prevented from collapsing inwardly. Further, the tension tube assembly 220 can be positioned beneath the mattress and separated from the bedding 202 by a distance such that an infant or child placed thereon will not come into contact with the tension tube assembly 220, for example, by deformation of the bedding 202.

The tension tube assembly 220 can be configured to be separable such that it may be stored and transported with the mattress 200. In this embodiment, the tension tube assembly 220 can comprise a first support tube 222, a second support tube 224, a connector 230, and a handle 232. Each of the first and second support tubes 222, 224 have distal ends 226, 227, respectively, and proximal ends 228, 229, respectively. The distal ends 226, 227 angle upwards and are configured to be received by the mattress 200, such as by a corresponding notch in the mattress feet 214. As shown, the angled nature of the distal ends 226, 227 and positioning of the tension tube assembly 220 defines a gap or interior space 190 between the mattress 200 and tension tube assembly 220. In this way, the tension tube assembly 220 can be a structural component of the mattress 200 by keeping the mattress deployed and providing tension to the bedding 202. Further, the tension tube assembly 220 also creates a volume of air below the mattress 200 due to its separation from the bedding 202. In this way, a child or infant placed onto the mattress 200 will not come into contact with any rigid objects or surfaces beneath the mattress 200.

The proximal ends 228, 229 of the tubes 222, 224 are positioned within corresponding channels in the connector 230. In the embodiment shown, the first support tube 222 is removable from the connector 230, whereas the second support tube 224 is fixed to the connector 230, e.g., by a screw or other means. The channel in the connector 230 for the first support tube 222 is configured to receive a length of the first support tube 222 such that the overall length of the tension tube assembly 220 (i.e., the first and second support tubes 222, 224, and connector 230) is less than the width of the deployed mattress 200 (i.e., in this embodiment, the distance between the two mattress feet 214). In this configuration, the distal ends 226, 227 of the tubes 222, 224 may be easily placed within the corresponding notches in the mattress feet 214, even for a mattress that is partially collapsed. The handle 232 is in communication with the connector 230 and first support tube 222 and is configured to urge the first support tube 222 outwardly such that the length of the tension tube assembly 220 meets or exceeds the width of the deployed mattress 200. Thus, manipulating the handle 232 such that it becomes parallel to the first and second support tubes 222, 224 actuates the tension tube assembly 220 to provide outward tension to the mattress 200, thus preventing collapse of the mattress and sufficiently tensioning the bedding 202 to support an infant or child placed thereon. Similarly, manipulating the handle 232 such that it becomes perpendicular to the first and second support tubes 222, 224 disengages the tension tube assembly 220, releasing tension and allowing the mattress 200 to collapse.

FIGS. 5A-D illustrate another embodiment of a mattress 250 and a tension tube assembly 270 according to the disclosure. As shown in this embodiment, the mattress 250 can comprise a bedding 252 and six mattress arms 254 connected by corner connectors 258 and lateral connectors 260. The bedding 252 can comprise a single layer of a breathable or mesh-like material. Additionally, the bedding 252 can comprise a plurality of sleeves 256 sized to accommodate the mattress arms 254 that are stitched along the outer perimeter of the bedding 252. Each lateral connector 260 can further comprise a notch 262 configured to receive a tension tube assembly 270.

Similar to the tension tube assembly 220 of FIGS. 4A-D, the tension tube assembly 270 can comprise a first support tube 272 and a second support tube 274. Each support tube 272, 274 comprises distal ends 276, 277, respectively, and proximal ends 278, 279, respectively. The distal ends 276, 277 can comprise a pin 286 configured to be placed within the notch 262 on one of the lateral connectors 260. The proximal end 278 of the first support tube 272 can comprise a connector 280 and a handle 282, and the proximal end 279 of the second support tube 274 can comprise a planar segment 284 extending radially from the first support tube 272.

FIG. 5D illustrates the mattress 250 in a collapsed state. In the collapsed state, the mattress arms 254 are collapsed inwardly along pivotal connections between the mattress arms 254 and the corner connectors 258 and lateral connectors 260. To deploy the mattress 250, the mattress arms 254 are manipulated to place the mattress 250 in a rectangular configuration, e.g., by manually urging the arms outward. In other words, the mattress arms 254 are positioned such that mattress arms 254 opposite from one another are substantially parallel to one another.

The tension tube assembly 270 may then be assembled by placing the proximal end 278 of the first support tube 272 in communication with the proximal end 279 of the second support tube 274 (e.g., via a channel configured to receive the second support tube 274 in the connector 280) such that the support tubes 272, 274 become parallel to one another along a straight line. The tension tube assembly 270 can then be placed in communication with the mattress 250 by placing the distal ends 276, 277 in communication with the lateral connectors 260, e.g., by placing the pins 286 within the notches 262. The handle 282 may then be manipulated such that the handle 282 becomes parallel to the first and second support tubes 272, 274 (as shown in FIG. 5B) and urges against the planar segment 284, thus separating the first support tube 272 from the second support tube 274. The lateral connectors 260 are thus urged outwardly, providing outward force or tension to the mattress 200, preventing the mattress 200 from collapsing at either the corner connectors 208 or lateral connectors 210. In this state, the tension tube assembly 220 provides sufficient tension to maintain the mattress in a taut configuration when the mattress 200 is deployed, maintaining each pair of the mattress arms 204 parallel to one another. The deployed mattress (e.g., as shown in the embodiment of FIGS. 5A-B) may then be placed within a play yard, crib, or other enclosure.

In certain embodiments, the first support tube 272 may be configured to be inserted into the channel of the connector 280 in a particular orientation, such that the planar segment 284 is correctly aligned with the handle 282. For example, this may be accomplished by a pin on the first support tube 272 that may be received by a notch in the channel of the connector 280.

When the mattress 250 is no longer in use, it may be collapsed to return to a collapsed state for bundling and transport. If positioned within a play yard or other enclosure, the mattress may first be removed and then set upside down, such that the tension tube assembly 270 is accessible. The handle 282 is then manipulated such that the handle 282 becomes perpendicular to the support tubes 272, 274, causing the portion of the handle 282 within the connector 280 to move away from the first support tube 272 such that the first support tube 272 may recess further within the channel in the connector 280, releasing tension across the frame of the mattress 250 and allowing for the arms to collapse along the corner connectors 258 and mattress lateral connectors 260. The distal ends 276, 277 of the support tubes 272, 274 may then be removed from the notches 262 in the lateral connectors 260 such that the tension tube assembly 270 may be removed, disassembled, and bundled with the mattress. If needed, the mattress lateral connectors 260 may then be manually urged inwards by an operator, thus collapsing the mattress 250 for storage and transport.

FIGS. 6A-F illustrate another embodiment of a mattress 300 and a tension tube assembly 320 according to the disclosure. As shown in the embodiment of FIGS. 6A-B, the mattress 300 can comprise a bedding 302 and a plurality of mattress arms 304 interconnected by corner connectors 308 and lateral connectors 310. Pins 312 are positioned on the corner connectors 308 and may be received by a corner assembly of a play yard according to the disclosure. The tension tube assembly 320 is in communication with the lateral connectors 310 and can provide outward force or tension to maintain the mattress 300 in a deployed state.

As shown in the embodiment of FIG. 6B, the bedding 302 can comprise two sheets of a breathable or mesh material partially stitched together, revealing a pocket 306 for receiving and encapsulating the interconnected mattress arms 304. The pocket 306 can be opened or closed by a zipper 314, thus allowing for the bedding 302 to be removed and cleaned or replaced when needed. Accordingly, the bedding 302 of the mattress 300 can comprise three layers: a first bedding layer defining the top of the mattress 300, a second bedding layer defining the bottom of the mattress 300, and a pocket of air between, thus increasing ventilation and breathability of the mattress 300. While in this embodiment, the pocket 306 is closed by a zipper 314, various other means of closing the pocket 306 can be used, such as Velcro, snap buttons, or other equivalents. Further, in certain embodiments, the bedding 302 can comprise a single sheet of material that is wrapped over itself in order to define a pocket 306.

FIGS. 6C-I illustrate the operation of the tension tube assembly 320 to transition the mattress 300 from a collapsed state (e.g., as shown in FIG. 6C) to a deployed state (e.g., as shown in FIG. 6I). In this embodiment, the tension tube assembly 320 utilizes threads such that the mattress can be deployed and tensioned by rotating a handle 340 to create separation between a first support tube 322 and a second support tube 324. The first and second support tubes 322, 324 each have distal ends 326, 327, respectively, in communication with the lateral connectors 310 of the mattress 300. The first and second support tubes 322, 324 further comprise proximal ends 328, 329, respectively (e.g., as shown in FIG. 6F), which in this embodiment can be in pivotal communication with one another via a hinged portion 334. Like other certain embodiments of tension tube assemblies according to the disclosure, the separation between the first and second support tubes 322, 324 (i.e., the length of the tension tube assembly 320 across the mattress) can serve to provide outward tension against the edges of the mattress, keeping the mattress taut and in a deployed state.

As shown in this embodiment, the tension tube assembly 320 can comprise a handle 340 and a cap 330 sized to contact the handle 340. The cap 330 is fixed to the first support tube 322 and can further comprise a channel 332 through which the first support tube 322 and its proximal end 328 are positioned. The second support tube 324 is in pivotal communication with the first support tube 322 via a hinged portion 334 and a threaded portion 336. The hinged portion 334 can comprise a planar segment that in turn is pivotally connected to the threaded portion 336. The threaded portion 336 comprises threads, and further comprises a bore 337 (as shown in the cross-sectional view of FIG. 8B) configured to slidingly receive the proximal end 328 of the first support tube 322. Additionally, the second support tube 324 can further comprise an indicator 338 and a handle 340. The handle 340 can further comprise a bore 342 extending therethrough, through which the second support tube 324 is positioned and in sliding communication. The bore 342 further comprises internal threads 335 (also as shown in the cross-sectional view of FIG. 8B) sized to accommodate the external threads of the threaded portion 336.

The tension tube assembly 320 is configured to pivot along the hinged portion 334 (e.g., as shown in FIG. 6C) to collapse the mattress into a collapsed or closed state (e.g., as shown in FIG. 6D). To deploy the mattress, the first and second support tubes 322, 324 are brought parallel to one another, i.e., along a straight line (as shown in FIG. 6E), by pivoting the first and second support tubes 322, 324 along the hinged portion 334. To provide sufficient outward tension to prevent the mattress from collapsing, the first and second support tubes 322, 324 may be urged outwardly away from one another, thus keeping the mattress taut and in a deployed or opened state (as shown in FIG. 6F).

To maintain the mattress in a deployed state and to further increase tension such that the mattress 300 can sufficiently support an infant or child, the handle 340 is slid over the second support tube 324, hinged portion 334, and threaded portion 336 such that the internal threads of the bore 342 engage with the external threads of the threaded portion 336 (as shown in FIG. 6G). The handle 340 is then rotated over the threaded portion 336, causing the internal and external threads to interact such that the handle 340 moves closer to the first support tube 322 (as shown in FIG. 6H) until it contacts the cap 330 (as shown in FIG. 6I). Additional rotation of the handle 340 urges the handle 340 against the cap 330, creating additional separation between the first support tube 322 and second support tube 324 by allowing the proximal end 328 of the first support tube 322 to slide within the bore 337 of the threaded portion 336, thus increasing the length of the tension tube assembly 320.

As shown in this embodiment, an optimal length or sufficient tension has been achieved when the indicator 338 becomes visible on the opposite end of the handle 340 from the cap 330. Ideally, the indicator 338 should be positioned at a point at which sufficient tension has been achieved to both maintain the mattress 300 in a deployed state and also to keep the bedding 302 sufficiently taut such as to support an infant or child placed thereon. For example, sufficient tension may be achieved when the tautness of the bedding 302 is able to prevent sufficient deformation such that the bedding 302 would contact the tension tube assembly 320. In certain embodiments, positioning of the indicator 338 can vary depending on the desired tautness and material comprising the bedding 302.

To collapse the mattress, the handle 340 is rotated in the opposite direction, such that the handle 340 moves towards the distal end 327 of the second support tube 324. Once the handle 340 moves sufficiently such that it is no longer in contact with the cap 330, tension is relieved. The mattress may then be collapsed by moving or sliding the handle 340 towards the proximal end 329 of the second support tube 324 such that the hinged portion 334 is exposed, allowing the first and second support tubes 322, 324 to pivot along the hinged portion 334 (e.g., as shown in FIGS. 6C-D).

As shown in this embodiment, the distal ends 326, 327 of the tubes 322, 324 are fixed to the corner connectors of the mattress. This has a benefit in that the tension tube assembly can be easily collapsed by urging the tubes 322, 324 along the hinged portion 334 such that they move towards becoming perpendicular (FIG. 6D) to parallel (FIG. 6C). Due to the fixed nature of the distal ends 326, 327 to the lateral connectors 310 of the mattress 300, this movement causes the mattress to collapse. However, in certain embodiments, the distal ends 326, 327 may also be removable.

FIGS. 7A-C illustrate another embodiment of a tension tube assembly 420 according to the disclosure in use with a mattress, such as the mattress 300 of FIGS. 6A-D. In this embodiment, the tension tube assembly 420 comprises a first support tube 422 connected to a second support tube 424. The first support tube 422 has a proximal end 428 connected to a proximal end 429 of the second support tube 424 by a hinged portion 438. As shown in this embodiment, the hinged portion 438 comprises a planar segment pivotally coupled to the proximal ends 428, 429 of the first support tube 422 and second support tube 424, respectively. The support tubes 424, 424 further comprise distal ends 426, 427, respectively, which can be in communication with the lateral connectors 310 of the mattress 300. The tension tube assembly 420 further comprises a handle 432 connected to a locking member 442 by a linkage bar 434. The handle 432 can be pivotally attached to the second support tube 424 by a handle connector 436. The locking member 442 comprises a channel through which the second support tube 424 is inserted, and is pivotally attached to the linkage bar 434, which in turn is pivotally attached to the handle 432.

When the tubes 422, 424 are brought parallel to one another (as shown in FIG. 7B), the locking member 442 is configured to slide over the second support tube 424, hinged portion 438, and first support tube 422. The locking member 442 may be urged to slide over the hinged portion 438 by manipulation of the handle 432. When the handle 432 is manipulated such that the handle 432 is pivoted from substantially perpendicular to the tubes 422, 424 (as shown in the embodiment of FIGS. 7A-B) to substantially parallel (as shown in the embodiment of FIG. 7C), the linkage bar 434 translates this motion to the locking member 442, which slides over the hinged portion 438 and proximal end 428 of the first support tube 422 in response. In this way, the locking member 442 prevents the tubes 422, 424 from pivoting along the hinged portion 438, thus locking the tension tube assembly 420 and mattress 300 into the deployed state.

To collapse the mattress 300, the above process may be reversed by manipulating the handle 432 in an opposite direction, i.e., bringing the handle 432 such that the handle 432 is pivoted from substantially parallel to the tubes 422, 424 to a position that is substantially perpendicular, thus sliding the locking member 442 away from the first support tube 422 and hinged portion 438 and allowing the tubes 422, 424 to again pivot with respect to each other along the hinged portion 438.

Further, it should be noted that the use of a tension tube assembly according to the disclosure results in a mattress according to the disclosure being maintained in a deployed state without the additional use of locks or other retention means (which may break after repeated use) at the corner connectors or mattress lateral connectors to hold the mattress in a deployed state. In contrast, the tension tube assembly itself urges against the edges of the mattress, providing sufficient tension to keep the mattress taut and deployed. Further, the mattress may be easily collapsed by simply disengaging the tension tube assembly. Moreover, the tension tube assembly can be positioned beneath and separated from the mattress, resulting in a volume of air. This a benefit in that an infant or child placed onto the bedding does not come into contact with any hard surfaces. In particular, creating separation between the tension tube assembly and the bedding of the mattress keeps the bedding soft and a child safe.

In certain embodiments, a tension tube assembly according to the disclosure can further comprise a biasing mechanism that helps to ensure that the correct amount of tension is applied to a mattress bedding. FIG. 8A is a schematic diagram of the mattress 300 having a tension tube assembly 320 which further comprises a biasing mechanism, which in this embodiment is a spring 704. While in this embodiment, the biasing mechanism is a spring 704, various other biasing mechanisms could be used. For example, any material that is capable of being compressed and resisting compression (e.g., rubber, springs, and the like) could be used.

As shown in this embodiment, the spring 704 can be positioned between and in communication with the first support tube 322 and second support tube 324. As noted previously, the second support tube 324 can be configured to extend towards the first support tube 322, increasing the overall length of the tension tube assembly 320 and providing tension to the mattress 300 and mattress bedding 302. If, for example, 60 pounds of outwardly directed force is required to properly tension the bedding 302, then the spring 704 can be configured to compress only when 60 pounds or more of force have been applied to it. Accordingly, tensioning the tension tube assembly 320 until the spring 704 compresses indicates that the mattress 300 and bedding 302 are properly tensioned.

While a spring that compresses upon 60 pounds of force is disclosed, in certain embodiments, springs or biasing mechanisms having varying levels of compressibility may be used. For example, depending on the material that comprises the bedding 302, more or less force may be required to properly tension the bedding 302. Various embodiments are considered to be within the disclosure and the particular force required is not intended to be limiting. Furthermore, the biasing mechanism can be positioned at any location on the tension tube assembly 320, and not necessarily between the first and second support tubes 322, 324.

Moreover, it should be noted that the use of a biasing mechanism or spring 704 ensures that the proper force is supplied to tension the mattress bedding 302 regardless of the condition of the bedding. For example, depending on the material comprising the bedding 302, the bedding 302 may stretch or lose elasticity over time and repeated use. This may result in additional extension of the tension tube assembly 320 to meet the required extension or force necessary to properly tension the mattress 300. However, the use of the spring 704 helps to ensure that the proper extension and force is reached, because it will only compress when the required force is supplied.

In certain embodiments, a biasing mechanism can also comprise a gauge that indicates that the correct tension required to maintain the mattress 300 in a deployed state has been reached. Such a gauge can either supplement or replace the indicator 338 (as shown in FIG. 6I), for example. FIGS. 8B-D illustrate an embodiment of a tension gauge 700 using a biasing mechanism or spring 704 for use with embodiments of tension tube assemblies according to the disclosure, such as the tension tube assembly 320 of FIGS. 6A-I. The tension gauge 700 is configured to indicate when sufficient tension has been achieved by the tension tube assembly 320, thus aiding a caregiver or operator to correctly deploy the mattress, such as the mattress 300 of FIGS. 6A-I.

Further, the tension gauge 700 can be configured to adapt to changes in properties of a mattress, such as loosening or stretching of the material comprising the bedding. Accordingly, the tension gauge 700 indicates when the mattress 300 has sufficient tension to not substantially deform when the weight of an infant or child is placed thereon. As shown in this embodiment, the tension gauge 700 can comprise an indicator slot 702 on the outwardly facing surface of the cap 330, and a spring 704, a first ring 706, a second ring 708, and a stop 710 positioned within the channel 332 of the cap 330.

In this embodiment, the cap 330 is sized such that the handle 340 can fit within the channel 332. As shown in the embodiment of FIG. 8B, the spring 704, first ring 706, second ring 708, and stop 710 are positioned adjacent to one another within the channel 332 of the cap 330. The spring 704 urges against the first and second rings 706, 708, which are held within the channel 332 via the stop 710. As shown in the embodiment of FIG. 8C, the first ring 706 is visible through the indicator slot 702 when the tension tube assembly 320 is not sufficiently tensioned. However, when the handle 340 is rotated such that the internal threads 335 engage with the threaded portion 336, the handle 340 moves into the channel 332 of the cap 330 until the handle 340 contacts the second ring 708. Additional rotation of the handle 340 urges the handle 340 against the first and second rings 706, 708, which in turn urge against the spring 704, thus compressing the spring 704 and allowing the first and second rings 706, 708 to slide laterally within the channel 332.

As shown in the embodiment of FIG. 8D, sufficient tension has been achieved once the second ring 708 is visible through the indicator slot 702. It should be noted that due to the spring 704, the tension gauge 700 can be operable to indicate the correct tension to maintain the necessary tautness of a mattress to support a child regardless of stretching or loosening of the mattress bedding. While in this embodiment, a spring 704 serves to bias the rings 706, 708, various other biasing means can be used, such as torsion springs, compressible materials such as rubber, and the like.

As described above, mattresses according to the disclosure may further comprise legs or pins at its corners, allowing a mattress to be used on its own as a cot without being placed within a play yard or other enclosure. FIGS. 9A-B illustrate the use of modular legs 316 that may be affixed to the pins 312 of the mattress 300 according to an embodiment of the disclosure. As shown in the embodiment of FIGS. 9A-B, each leg 316 can comprise an elongated member comprising a notch sized to securely accommodate each pin 312. The leg 316 can be placed over and secured to each pin 312, extending the height of the mattress 300 such that the tension tube assembly 320 does not rest on the floor. As shown in the embodiment of FIG. 9A-B, the mattress 300 may then simply be placed on any surface for use.

As previously noted, mattresses according to the disclosure can comprise a bedding having a surface that is not in contact with any structural components. FIGS. 10A-D illustrate a deployed mattress having a tension tube assembly (such as the mattress 200 having a tension tube assembly 220 of FIGS. 4A-D) placed in the base of a deployed play yard, such as the base 106 of the deployed play yard 100 of FIG. 2. In these figures, the fabric coverings 104 have been omitted to highlight the placement of components of the mattress 200 and foldable frame 150. As described above and further illustrated by FIGS. 10A-D, the edges of the mattress 200 are supported by the lower corner assemblies 170, such that pins 212 on the corner connectors 208 are placed in corresponding notches on the lower corner assemblies 170.

Further, as shown in this embodiment, the base assembly 162 can be configured to accommodate both the mattress 200 and tension tube assembly 220. In particular, the lower portion 166 of the base assembly 162 is positioned beneath the tension tube assembly 220. Further, the tension tube assembly 220 is positioned beneath and separated from the bedding 202 of the mattress 100. The result is that there is a volume of air or an interior space 190 created between the bedding 202 of the mattress 100 and the structural features of the mattress and play yard. As shown in this embodiment, the interior space 190 can represent the difference in height or separation between the bedding 202 of the mattress 200, and the structural components of the play yard 100 and mattress 200, e.g., the base assembly 162 and tension tube assembly 220. Stated differently, the interior space 190 can be a volume having the mattress 200 or bedding 202 as its top, and the plane of the base assembly 162 and tension tube assembly 220 as its bottom. In particular, the interior space 190 is useful because it prevents an infant or child from contacting any rigid components of the mattress 200 or play yard 100 when the infant or child is placed thereon. Accordingly, a child placed on the bedding 202 of the mattress 100 will not come into contact with any hard, structural features or components of the play yard and/or mattress, provided that the bedding 202 is sufficiently tensioned.

Further, if the bedding 202 comprises mesh or another breathable material, the interior space 190 helps to promote ventilation and breathability. Providing a mattress 200 having a mesh fabric, such as the bedding 202, results in additional benefits when used in the play yard 100. As shown, the mesh fabric of the mattress 200 is breathable and transparent. The interior space 190 below the mattress 200 and above the base assembly 162 is visible. This defined space helps to provide ventilation to the play yard 100, especially when used with a bedding 202 that comprises mesh or another breathable material. Further, as there is no material beneath the mattress, infants or children placed on their stomachs on the mattress have a much lower possibility of accidental suffocation. An infant who does place his or her mouth over the mattress may still be able to sufficiently breathe given that the mattress bedding is composed of stretched mesh. Additionally, if a fluid is spilled on the mattress, it will simply leak through the mesh, which will aid both cleaning and drying of the mattress. Further, creating the interior space 190 by way of the base assembly 162 and tension tube assembly 220 helps to prevent other objects from contacting the bedding 202, which could potentially negate the benefits of using a breathable material such as mesh.

Additionally, in certain embodiments, a deployed mattress (such as the mattress 200) can be used to provide outward tension against the frame of a play yard, increasing stability of the play yard itself, maintaining the play yard 100 in a deployed state, and preventing accidental collapse. In this way, the tension provided by the tension tube assembly 220 may be further utilized to provide outward force or tension against the foldable frame 150, thus maintaining both the play yard 100 and mattress 200 in a deployed state without the need for additional locks or retention mechanisms.

Fabric coverings for the play yard 100 can comprise additional features related to accommodating mattresses and tension tube assemblies according to the disclosure. FIG. 11 illustrates the use of a base fabric 105 near the base 106 of the play yard 100. The base fabric 105 can be positioned above the base assembly 162, thus providing a surface for initially placing and correctly aligning a mattress. Further, the base fabric 105 can additionally prevent a child from contact with the base assembly 162 or other rigid components by providing an additional layer between a mattress and those components. As shown in this embodiment, the base fabric 105 comprises a soft mesh material. As the base fabric 105 is mesh, ventilation and breathability of an inserted mattress is not significantly impacted.

In the embodiment shown, the base fabric 105 further comprises a gap 107 positioned near the center of the play yard 100 and extending laterally across the base 106. In this embodiment, the gap 107 allows for feet on the mattress (such as the feet 214 of the mattress 200 of FIGS. 4A-B) to pass through the base fabric 105 to contact the floor or other supporting surface. While in this embodiment, the base fabric 105 comprises a gap extending laterally across the base 106, other means of allowing mattress feet to contact the floor may be used, such as a small aperture or hole within the base fabric 105. As noted above, in certain embodiments, a mattress 200 according to the disclosure may not comprise feet 214. Accordingly, in these embodiments, the base fabric 105 of a play yard may not contain any gaps or holes and simply comprise a single sheet of fabric.

In certain embodiments, a base fabric may further comprise a pocket or other features for receiving a tension tube assembly according to the disclosure. FIG. 12A illustrates another embodiment of a base fabric 105 when used in a play yard according to the disclosure, such as the play yard 100 of FIG. 1. As shown in this embodiment, the base fabric 105 can further comprise a pocket 109 in place of a gap 107. The pocket 109 is sized to accommodate a tension tube assembly, such as the tension tube assembly 320 of the mattress 300 of FIGS. 6A-I. Embodiments of play yards and base fabrics utilizing a pocket 109 are particularly advantageous for mattresses that do not have additional feet, such as the mattress 300. As shown in the embodiment of FIGS. 12A-B, when the mattress 300 is placed within the play yard 100, its tension tube assembly is covered by the pocket 109.

In certain embodiments, hub assemblies according to the disclosure may be attached to the pocket 109 such that an operator can open and close the play yard by pulling upwards on the pocket 109. Further, the fabric 105 can comprise holes 111 for receiving pins (e.g., the pins 212, 312 of the mattresses 200, 300) to be placed into the lower corner assemblies 170 of the play yard 100.

As shown in these embodiments, the base fabric 105 can be taut when the play yard 100 is deployed, and thus can be substantially in contact with the mattress 300 when the mattress 300 is inserted into the play yard 100. However, in other embodiments, the base fabric 105 can comprise a looser or additional material, thus providing some space between the base fabric 105 and the mattress 300. In certain embodiments, the base fabric 105 can be positioned below the base assembly 108.

Mattresses according to the disclosure may also be placed at positions other than the base of a play yard. FIGS. 13A-B illustrate the use of a bassinet attachment 120 that may be used with embodiments of play yards according to the disclosure. As shown in this embodiment, the bassinet attachment 120 can comprise a sheet of fabric configured to be placed over the top rails 154 of the play yard 100. A base fabric, such as the base fabric 105 of FIGS. 12A-B, can be stitched to the bassinet attachment 120 such that it presents a surface for holding a mattress at a higher position than the base of the play yard (as shown in FIG. 13A).

FIG. 13B illustrates a mattress, such as the mattress 300, placed in the bassinet attachment 120 and held at a bassinet position by the base fabric 105. Similar to when the mattress is placed in the base of the play yard, the structural components of the mattress (i.e., the tension tube assembly 320, mattress arms 304, corner connectors 308, and lateral connectors 310) are not substantially close to or in contact with the fabric bedding 302. Accordingly, an infant or child placed on the mattress 300 will not come into contact with any rigid components of the mattress 300—only the fabric bedding, which can comprise breathable mesh.

It should be noted that a play yard or mattress according to the disclosure is not intended be limited only to collapsible play yards or mattresses. For example, in some embodiments, the play yard is not collapsible, but may receive either a collapsible or non-collapsible mattress. In some embodiments, the mattress may be permanently affixed to the play yard so that it is not removable. Various combinations of the features described herein may be combined to create play yards and mattresses according to the disclosure.

As described previously with respect to FIGS. 3A-B, to collapse the play yard 100 for transport, the hub assembly 450 is urged upwards; to deploy the play yard 100 for use, the hub assembly 450 is urged downwards. Preferably, hub assemblies according to the disclosure utilize a lock or other mechanism to prevent accidental collapsing of the play yard. FIGS. 14A-D illustrate the internal components of the hub assembly 450, which comprises a housing 452 connected to base arms 164 of a base assembly 162, a release button 454, and sliding pins 456. In this embodiment, the hub assembly 450 utilizes a gravity-lock design, wherein pulling up on the release button 454 to place the release button 454 into an upper position unlocks the play yard and allows the play yard to collapse. When the release button 454 is released, gravity causes the release button 454 to move into a lower position and thus locks the play yard from folding.

As shown in this embodiment, the release button 454 comprises a handle 458 and a radial slot 460. The handle 458 may be manipulated by an operator to actuate the hub assembly 450. The housing 452 can comprise a toroidal shaped member comprising an aperture 453 sized to accommodate the release button 454. The aperture 453 can comprise a ledge 462, which is positioned such that it is within the radial slot 460 of the release button 454. In this way, excessive movement of the release button 454 upwards or downwards is prevented by the sidewalls of the radial slot 460 contacting the ledge 462.

The housing 452 further comprises four attachment points 464 for connection to the base arms 164 of the base assembly 162. The base arms 164 may be pivotally attached to the attachment points 464 at pivot points 466. In this embodiment, each pivot point 466 comprises an end of a base arm 164 pivotally connected to each attachment point 464 by a pin. The base arms 164 are prevented from pivoting upwards (with respect to the housing 452) by a blocking flange 468.

Each of the base arms 164 can further comprise a locking pin 165, which may be situated within a slot 470 of the sliding pin 456. Any movement of the base arms 164 downward causes the sliding pin 465 to traverse the slot 470, urging the sliding pins 456 inwards towards the center of the housing 452. As shown in the embodiment of FIG. 14A, when the release button 454 is in the lower or locked position, the sliding pin 456 may be prevented from sliding inwards towards the center of the housing 452 due to being in contact with the sidewalls of the release button 454 below the radial slot 460. Thus, the base arms 164 are prevented from moving about pivot points 466 while the release button 454 is in the lower position. As shown in the embodiment of FIG. 14B, to collapse the play yard 100, an operator pulls the release button 454 upwards to an unlocked or upper position, thus creating a sliding space 472 within the housing 452. The sliding pin 456 is then free to enter the sliding space 472 as the hub assembly 450 is urged upwards, such that the base arm 164 may pivot downwards along pivot point 466, as shown in FIGS. 14C-D.

Further, while in this embodiment a hub assembly 450 is used to collapse the play yard 100, various other forms of hub assemblies, hubs, or other features may be positioned at the center of the base assembly 162 or used to collapse the play yard. For example, in certain embodiments, a hub assembly may comprise a flange pivotally coupled to each of the base arms 164. Further, In certain embodiments, a play yard can lack a hub assembly 450 and/or a base assembly 162.

FIG. 15 illustrates another embodiment of a play yard 500 according to the present disclosure. Like the play yard 100 of FIG. 1, the play yard 500 may comprise sides 502 which may be composed of fabric, mesh, or any other suitable material. Fabric coverings 504 envelop the top half of the frame and cover the supporting structure underneath, providing a soft touch and appearance. Legs 508 support the structure and prevent the base 506 from coming into contact with the floor or other supporting surface. Additionally, the play yard 500 features a bassinet placed in a bassinet position 510 placed at a position higher than the base 506. The bassinet position 510 is intended for infants who are not yet able to pull themselves up and potentially over the sides 502 of the play yard 500. Additionally, the play yard 500 features an electronics module 512 which may help soothe an enclosed infant or child by providing additional and automated light, sound, and vibration. In this embodiment, the sides 502 and other fabric coverings of the play yard 500 comprise mesh, thus resulting in a play yard 500 with high breathability. Further, the legs 508 create an interior space 516 beneath a mattress within, ensuring that the mattress and interior of the play yard 500 will remain breathable.

In comparison to the play yard 100, a foldable frame 550 of the play yard 500 lacks a base assembly 162. FIG. 16 illustrates the play yard 500 with the sides 502, fabric coverings 504, bassinet and bassinet position 510, and other components removed to highlight the foldable frame 550. The foldable frame 550 comprises a side structure, such as a plurality of side posts 560; an upper rail assembly 570 comprising eight upper rails 572 and eight lower rails 576 pivotally connected to upper corner assemblies 574 and lateral connectors 580; and mattress connectors 650 which have a sloped structure and are configured to receive the edge of a mattress placed within the play yard 500. In this embodiment, the foldable frame 550 collapses as the lateral connectors 580 are urged downwards, thus pivoting the upper rails 572 against both the upper corner assemblies 574 and lateral connectors 580, thus bringing the side posts 560 inwards and closer to one another to collapse the structure.

As shown in this embodiment, the play yard 500 lacks a base assembly, such as the base assembly 162 in the play yard 100 of FIGS. 1-14. Accordingly, the play yard 500 can utilize various means other than an integrated base assembly to provide stability to the foldable frame 550. As will be described in detail further below, the play yard 500 utilizes mattress connectors 650, a mattress, and positioning of the side posts 560 to increase tension against the foldable frame 550, making the foldable frame 550 taut and thus providing a stable structure when the play yard 500 is deployed. However, play yards according to the disclosure may make use of such techniques in addition to or in combination with the use of a base assembly or other means for increasing tension and structural stability when deployed. For example, a play yard according to the disclosure may feature both a base assembly and mattress connectors.

Like the play yard 100 of FIG. 1, the lateral connectors 580 are configured such that the lateral connectors 580 and upper corner assemblies 574 remain parallel to a plane 578 as the play yard 500 is collapsed. In certain embodiments, this feature is a result of the rails 576 on the left and right sides of a lateral connector 580 communicating or being connected with one another. FIGS. 17A-B illustrate the operation of the lateral connectors 580 in a play yard 500 as the play yard is transitioned from the deployed state (FIG. 17A) to the collapsed state (FIG. 17B). The upper rail assembly 570 comprises parallel lower rails 576 in addition to the upper rails 572, thus forming a parallelogram with the lateral connector 580 and upper corner assemblies 574. In this embodiment, the play yard 500 utilizes a pair of motion connectors 588 to ensure that the rails 572, 576 on each side of the lateral connector 580 remain symmetric as the play yard is collapsed or deployed.

The motion connectors 588 are configured to maintain the lower rails 576 on each side of the lateral connector 580 in a substantially symmetric balance. In other words, as the lower rails 576 pivot with respect to the lateral connector 580, the plane formed by each lower rail 576 is a mirror image to its opposite lower rail 576. Each motion connector 588 comprises a substantially planar and rectangular segment. At one end, each motion connector 588 is pivotally coupled to a locking pin 584, which is positioned within a vertical channel 586 formed into the lateral connector 580. At an opposite end, each motion connector 588 is coupled to a respective lower rail 576 at an angle. The angle is such that when the play yard 500 is in a deployed state, the locking pin 584 is positioned at an uppermost portion of the vertical channel 586 (e.g., as shown in FIG. 17A), and when the play yard 500 is in a collapsed state, the locking pin 584 is positioned at the bottom of the vertical channel 586 (e.g., as shown in FIG. 17B). Because both of the motion connectors 588 are coupled to the locking pin 584, the upper rails 572 and lower rails 576 move symmetrically as the lateral connector 580 moves upwards or downwards with respect to the upper corner assemblies 574, thus keeping the upper corner assemblies 574 and lateral connector 580 parallel to a single plane. Additionally, the arrangement of the vertical channel 586 and motion connectors 588 is such that the play yard is prevented from overextension, i.e., past the collapsed or deployed states.

In certain embodiments, motion connectors 588 may instead be used with the upper rails 572 as opposed to the lower rails 576. In these embodiments, the locking pin 584 would be positioned at the bottom portion of the vertical channel 586 when the play yard 500 is in the deployed state, and at the uppermost portion when in the collapsed state. Still further embodiments may employ only a single rail connected to each side of the lateral connector 580 instead of the upper and lower rails 572, 576. Further, while in this embodiment the motion connectors 588 are used with the play yard 500, motion connectors according to the disclosure may be used with various embodiments of play yards, such as the play yard 100 of FIG. 1.

FIGS. 18A-E illustrate another embodiment of an upper rail assembly 570 according to the disclosure. As shown in this embodiment, the upper rail assembly 570 comprises lower rails 576 parallel to the upper rails 572, e.g., as shown in the zoomed-in view of FIG. 18B. Each of the rails 572, 576 are pivotally attached to the upper corner assemblies 574 and lateral connector 580 at pivot points 582. As shown in FIG. 18B, the pivot points 582 for the lower rail 576 can be set at a distance closer to an outside edge of the upper rail assembly 570 than the pivot points 582 for the upper rail 572.

Each pair of rails 572, 576 on each side of the lateral connectors 580 forms a parallelogram. As shown in FIGS. 18C-D, as the play yard 500 is collapsed, opposing parallelograms on each side of the lateral connector 580 move symmetrically with one another. In other words, the shape of the parallelogram formed by the upper rail 572, lower rail 576, and upper corner assembly 574 connected to the left side of the lateral connector 580 is a near reflection of the shape of the parallelogram formed by the opposite upper rail 572, lower rail 576, and upper corner assembly 574 attached to the right side of the lateral connector 580. Thus, any change in shape in the parallelograms is symmetric as the upper rail assembly 570 is collapsed or deployed. As further shown by FIG. 18C, this feature results in the upper corner assemblies 574 remaining substantially parallel to the same plane 578 as the lateral connector 580 as the play yard 500 is moved from a collapsed to a deployed configuration, or vice versa. Accordingly, this feature ensures that the foldable frame 550 will collapse or deploy symmetrically. Further, the side posts 560 attached to the upper corner assemblies 574 remain parallel to one another as the play yard 500 is collapsed or deployed.

FIG. 18E illustrates one embodiment of a pair of upper rails 572 according to the disclosure that are configured to maintain the upper rails 572 on each side in symmetric balance as the play yard 500 collapses or deploys. As shown in this embodiment, each of the upper rails 572 can further comprise a gear 581 having teeth. The gear 581 is pivotally connected to a lateral connector underneath its cover (not shown) such that the teeth of each gear 581 are interlocked with one another. As shown in this embodiment, the interlocking teeth of the gears 581 ensure that the upper rails 572 move symmetrically as the lateral connector 580 moves upwards or downwards with respect to the upper corner assemblies 574.

Further, while in this embodiment the lateral connectors 580 are used with the play yard 500, lateral connectors enabling symmetric collapse and deployment of a play yard according to the disclosure may be used with various embodiments of play yards, such as the play yard 100 of FIG. 1.

Embodiments of lateral connectors according to the disclosure may also be implemented in a collapsible mattress, such as a mattress 600 as shown in FIGS. 19A-D. The mattress 600 comprises arms 620, lateral connectors 680, corners 610, and a bedding 630. To increase breathability, the bedding 630 may comprise mesh. In this embodiment, the mattress 600 uses lateral connectors 680 that comprise a gear, similar to the lateral connector 680 of FIG. 18E. In use, the arms 620 of the folded or collapsed mattress 600 (FIG. 19A) are urged outwards such that the arms 620 pivot about the lateral connector 680 until they are parallel and the mattress forms a rectangular structure (FIG. 19D). The mattress 600 may then be placed within a play yard 500, as shown in FIG. 19E. Further, the mattress 600 may be placed within a collapsible or non-collapsible play yard, crib, bed, or other furniture.

As previously noted, various embodiments and uses of lateral connectors are within the scope of this disclosure. Lateral connectors 680 may be a part of a mattress, play yard, crib, or any other collapsible structure.

In this embodiment, the side posts 560 are formed from aluminum. As the side posts 560 are visible externally (as shown in the deployed play yard of FIG. 15), the play yard 500 presents a visual appearance of primarily fabric and mesh, but with an aluminum profile. As shown in the exploded cross-sectional view of FIG. 20A, each of the side posts 560 comprises an aluminum sheath 562 which has an exterior curved surface 563 on one side and an interior surface 564 configured to receive and be coupled to a plastic insert 566. In this way, the exterior of the plastic insert 566 is presented to the interior of the play yard 500, while the exterior curved surface 563 of the aluminum sheath 562 is presented to the exterior of the play yard 500. This configuration results in several benefits, including reduced cost due to less aluminum being needed, as well as presenting a softer, plastic surface to the interior of the play yard 500.

Further, the sides 502 are coupled to a plastic frame 520. At each corner of the plastic frame 520 are two retention tubes 522. As shown in the assembled view of FIG. 20B, the retention tubes 522 are received by the two retention channels 568 running along the edge of the aluminum sheath 562, thus securing the sides 502 to the side post 560.

FIGS. 21A-F are perspective views of a play yard 500 utilizing the parallel arm configuration and side posts as described above as it is transitioned from a collapsed state (FIG. 21A) to an opened or deployed state (FIG. 21F). Starting from the collapsed state (FIG. 21A), the sides 502 of the play yard 500 are urged outwards, causing the upper rails 572 of the upper rail assembly 570 to transition from perpendicular to the floor or supporting surface to parallel from the floor or supporting surface (FIGS. 21B-D). Further, this causes the sides 502 to stretch. When the upper rails 572 reach their uppermost position, the sides 502 are fully stretched and the play yard 500 is deployed (FIGS. 21E-F) and awaiting receipt of a mattress to be placed within the base 506 or in a bassinet position 510. As shown, the sides 502 of the play yard 500 comprise mesh, and the play yard 500 further comprises an additional fabric covering 505 in the base 506, which like the additional fabric covering 105 comprises a mesh material.

FIGS. 22A-B illustrate the mattress connector 650 in further detail. As described above, in this embodiment, the play yard 500 lacks an integrated base assembly, such as the base assembly 162 of FIG. 2. Instead, the play yard 500 is configured to rely on an inserted mattress to provide outward force and tension against the interior of the foldable frame 550, thus providing structural stability and support for the play yard 500 when in a deployed state. Accordingly, in certain embodiments, play yards according to the disclosure may utilize a mattress connector positioned at each interior corner of the enclosure. The mattress connector 650 is configured to receive an edge of an inserted mattress within the play yard. The mattress may comprise any mattress, including mattresses having a tension tube assembly according to embodiments of the disclosure.

As shown in FIG. 22A, the mattress connector 650 features a notch 655 for receiving the edge of a mattress. Above the notch 655 is a sloped portion 660 and a stepped portion 665. The mattress connector 650 is shaped so that an outside corner 670 has a conical shape, which may be attached to a leg or side tube of the play yard. The mattress connector 650 may be secured to the play yard with screws, rivets, or any other suitable means of attachment. In use, a corner 610 of a mattress 600 is placed against the sloped portion 660 and urged downwards over the stepped portion 665 and into the notch 655. As shown in FIG. 22B, when a corner 610 of a mattress (such as the mattress 600 of FIG. 19E, or other mattresses according to embodiments of the disclosure) is inserted into the notch 655, the corner 610 is partially covered by the stepped portion 665, thus snapping and securing the mattress in place. To remove the mattress, the mattress corner 610 is urged away from the notch 655 such that it is no longer covered by the stepped portion 665, and then removed from the play yard.

In this embodiment, the corner 610 of the mattress 600 can comprise a corner piece 615 that may be used to join the arms 620 of the mattress 600 together. In some embodiments, the corner piece may be plastic. The corner piece 615 may be rounded on the outside edges, thus facilitating placement of the corner piece 615 within the notch 655. Additionally, the corner piece 615 may be used to increase tension on the foldable frame 550 by increasing the distance between the side post 560 and the mattress 600. In certain embodiments, the corner piece 615 may be removable and replaceable.

FIG. 23 illustrates the foldable frame 550 with a mattress (such as the mattress 600 of FIGS. 19A-D) placed in the base 506 and secured by the mattress connectors 650. While in this embodiment, the mattress 600 is placed within the foldable frame 550, various mattresses may be used, such as the mattress 200 having a tension tube assembly of FIGS. 4A-D, or other mattresses and tension tube assemblies according to the disclosure. In this figure, the mattress bedding 630 is omitted. As shown, the mattress 600 comprises corners 610. As noted above, the mattress 600 may also be collapsible. When placed in the play yard and with the corners securely in the mattress connectors 650, the mattress 600 provides additional tension against the side post 560, urging the side post 560 outwards and away from the play yard center. This action prevents the foldable frame 550 from collapsing or bending inwards, and thus “locks” the frame in a deployed position. Further, the mattress connectors 650 increase the gap between the mattress 600 and side post 560, creating additional tension in the foldable frame 550 and leading to a more stable structure.

Mattress connectors 650 may be used at any position along the side post 560 or legs 508 of the foldable frame 550. For example, FIG. 24 illustrates the foldable frame 550 with mattress connectors 650 placed at both the base 506 and at the bassinet position 510. In the bassinet position 510, the mattress connectors 650 can engage the mattress 600 in the same way, snapping the mattress 600 in place, increasing tension against the side post 560, and increasing the overall stability of the foldable frame 550.

It should be noted that the foldable frame 550 may include mattress connectors 650 at any position, or at multiple positions, along the side post 560. Additionally, the foldable frame 550 may accommodate multiple mattresses. For example, an assembled play yard 500 may comprise a mattress 600 at the base 506 and another mattress 600 at the bassinet position 510. Further, the mattress connectors 650 may instead be permanently secured to the mattress 600 and removably attached to the side posts 560. In other embodiments, the mattress connectors and mattress are integrated into the foldable frame 550 and not removable.

In certain embodiments, tension across the foldable frame 550 may be further increased by configuring the foldable frame 550 such that a relaxed angle for the side posts 560 in the deployed position is several degrees towards the interior of the foldable frame 550. As shown in FIG. 25, a relaxed or default angle 530 for the side posts 560 is such that the legs 508 are closer to the interior of the structure than the upper corner assemblies 574. In other words, when the play yard 500 is initially deployed, the default position for the side posts 560 is such that the side posts 560 are not perpendicular to the ground. However, when a mattress 600 is placed within the foldable frame 550 at either the bassinet position 510 (as shown) or base 506, the side posts 560 are urged further outwards, causing the side posts 560 to again be substantially perpendicular to the ground, thus increasing tension along the foldable frame 550 and maintaining a stable structure. Additionally, setting the default angle for the side posts 560 to not be perpendicular to the ground helps when collapsing the play yard 500. When the mattress is removed, the frame relaxes back towards the default angle 530, thus aiding collapsing of the structure.

In some embodiments, the junction between the mattress 600 and sides 502 may be covered by a protection liner 625, as shown in FIGS. 26A-B. The protection liner 625 provides a soft, seamless surface between the sides 502 and fabric of the mattress 600. The protection liner 625 may comprise soft foam, fabric, or any combination of materials. For example, in this embodiment, the protection liner 625 comprises four strips of foam covered with fabric, which are stitched together at each corner. However, in other embodiments the protection liner 625 may comprise a single strip wrapped around the edges of the mattress 600.

As shown in FIG. 26B, the protection liner 625 is in contact with both the mattress 600 and side 502. In this embodiment, the protection liner 625 is stitched to the mesh comprising the bedding of the mattress 600. When the mattress 600 is placed in the play yard 500, the protection liner 625 may then be secured to the side 502 of the play yard using Velcro, a zipper, or other temporary attachment means. When the mattress 600 is removed, the protection liner 625 is detached from the side 502. However, in other embodiments, the protection liner 625 may instead be stitched to the sides 502 and releasably connected to the mattress 600.

Additional features include the fabric coverings 504. As shown in FIGS. 27A-B, fabric coverings 504 may also cover the top of the foldable frame 550. Fabric coverings 504 may be removable and placed on top of the play yard 500 when it is deployed. Further, in some embodiments, four plastic hooks are used to support the fabric coverings 504 covering the top area of the foldable frame 550. The fabric coverings 504 along the top area of the foldable frame 550 create a softer interior for the bassinet position 510, thus creating a safer environment for an infant placed therein.

Though the disclosed embodiments are directed to a play yard, various other embodiments are commensurate with the scope of the disclosure. For example, embodiments may comprise play yards, play pens, or cribs.

Further, it should be noted that various features of the above embodiments and disclosure may be combined with one another to form various play yards. The present disclosure is not to be limited in scope by the specific embodiments described herein. Indeed, other various embodiments of and modifications to the present disclosure, in addition to those described herein, will be apparent to those of ordinary skill in the art from the foregoing description and accompanying drawings. Thus, such other embodiments and modifications are intended to fall within the scope of the present disclosure. Furthermore, although the present disclosure has been described herein in the context of a particular implementation in a particular environment for a particular purpose, those of ordinary skill in the art will recognize that its usefulness is not limited thereto and that the present disclosure may be beneficially implemented in any number of environments for any number of purposes. Accordingly, the claims set forth below should be construed in view of the full breadth and spirit of the present disclosure as described herein. 

What is claimed is:
 1. A play yard for holding an infant or child, comprising: an upper rail assembly comprising a plurality of upper rails; a base assembly; a side structure connecting said upper rail assembly and said base assembly; and a mattress positioned above and separated from the base assembly, the mattress comprising a substantially planar surface comprising a breathable material, wherein an interior space is formed between the mattress and at least part of the base assembly, said mattress comprising the top of said interior space, said interior space configured to be substantially void; wherein said upper rail assembly, said side structure, said mattress, and said base assembly define a substantially rectangular enclosure.
 2. The play yard of claim 1, wherein said base assembly further comprises at least one base arm connected to said side structure, said at least one base arm extending internally from said side structure and positioned below and at least partially separated from said mattress to form said interior space.
 3. The play yard of claim 1, wherein said base assembly further comprises a plurality of base arms and a hub assembly, said hub assembly positioned within said play yard, said plurality of base arms connected to said side structure and said hub assembly, said hub assembly and said plurality of base arms positioned below said mattress to form said interior space.
 4. The play yard of claim 1, wherein said upper rail assembly is configured to collapse said play yard to a collapsed state, and further comprises a plurality of lower rails positioned beneath and substantially parallel to the plurality of upper rails, wherein as the play yard is collapsed the plurality of lower rails remain substantially parallel to the plurality of upper rails.
 5. The play yard of claim 4, wherein said upper rail assembly further comprises at least one lateral connector and at least two corner connectors, wherein said plurality of upper rails further comprises a left upper rail and a right upper rail each pivotally coupled to said at least one lateral connector, said left upper rail and said right upper rail each pivotally coupled to a corner connector of said at least two corner connectors; wherein said upper rail assembly is configured such that as the at least one lateral connector is urged downwards, the at least one lateral connector and the at least two corner connectors remain substantially parallel to a plane, and said left upper rail and said right upper rail move symmetrically.
 6. The play yard of claim 1, wherein the base assembly further comprises a hub assembly, the hub assembly comprising: a release button; at least one sliding pin in communication with at least one of said plurality of base arms and said release button; wherein manipulating said release button creates a space within said hub assembly for said at least one sliding pin to enter, allowing said plurality of base arms to pivot with respect to said hub assembly and said side structure.
 7. The play yard of claim 1, wherein the breathable material comprises mesh.
 8. The play yard of claim 1, further comprising a base fabric positioned above the base assembly and configured to receive the mattress.
 9. The play yard of claim 8, wherein the base fabric comprises a pocket sized to accommodate a structural component of the mattress.
 10. A collapsible mattress for a play yard, comprising: a mattress frame, said mattress frame comprising a plurality of mattress arms pivotally connected to one another to form a rectangular shape; a fabric bedding connected to said mattress frame to define a substantially planar surface for placing an infant or child; and a tensioner in communication with said mattress frame, said tensioner positioned below and substantially not in contact with said fabric bedding, said tensioner configured to provide a sufficient force against the interior of said mattress frame to prevent said mattress frame from collapsing and to support an infant or child placed thereon.
 11. The collapsible mattress for a play yard of claim 10, further comprising a plurality of modular legs in communication with the mattress frame to allow for usage of the mattress as a cot.
 12. The collapsible mattress for a play yard of claim 10, further comprising a first lateral connector linearly connecting at least two of said plurality of mattress arms, wherein said tensioner is in communication with said first lateral connector to provide outward force against the interior of said mattress frame.
 13. The collapsible mattress for a play yard of claim 12, wherein said tensioner comprises a tube having an end connected to said first lateral connector.
 14. The collapsible mattress for a play yard of claim 13, further comprising a second lateral connector spaced opposite from said first lateral connector, said second lateral connector linearly connecting at least two of said plurality of mattress arms, wherein an opposite end of said tube is connected to said second lateral connector, wherein said tube is configured to extend between said first lateral connector and said second lateral connector to provide outward force against the interior of said mattress frame.
 15. A collapsible play yard for receiving an infant or child, comprising: an upper rail assembly, said upper rail assembly comprising a plurality of horizontal upper rails; a side structure connected to said upper rail assembly, said side structure comprising a plurality of vertical posts; and a mattress positioned on the interior of said side structure, said mattress and said side structure configured such that said mattress provides outward force against the interior of said side structure to prevent said play yard from collapsing.
 16. The collapsible play yard of claim 15, further comprising a base assembly in communication with said side structure, said base assembly further comprising a hub assembly.
 17. The collapsible play yard of claim 15, wherein said plurality of vertical posts are positioned at corners of said play yard, wherein said mattress and said plurality of vertical posts are configured such that the corners of said mattress provides sufficient outward force against said plurality of vertical posts to prevent said play yard from collapsing.
 18. The collapsible play yard of claim 16, further comprising at least one mattress connector, said at least one mattress connector connected to at least one post of said plurality of vertical posts and configured to receive a corner of said mattress.
 19. The collapsible play yard of claim 15, wherein said upper rail assembly further comprises at least one lateral connector and at least two corner connectors, wherein said plurality of horizontal upper rails further comprises a left upper rail and a right upper rail each pivotally coupled to said at least one lateral connector, said left upper rail and said right upper rail each pivotally coupled to a corner connector of said at least two corner connectors; wherein said upper rail assembly is configured such that as the at least one lateral connector is urged downwards, the at least one lateral connector and the at least two corner connectors remain substantially parallel to a plane, and said left upper rail and said right upper rail move symmetrically.
 20. The collapsible play yard of claim 15, wherein said side structure comprises a relaxed position in which each of said plurality of vertical posts are angled inwards towards a center of said play yard; wherein said mattress positioned on the interior of said side structure urges said plurality of vertical posts away from said relaxed position, causing the plurality of vertical posts to become substantially perpendicular to said upper rail assembly. 